20211011012 has 6 divisors (see below), whose sum is σ = 35369269278. Its totient is φ = 10105505504.

The previous prime is 20211011011. The next prime is 20211011039. The reversal of 20211011012 is 21011011202.

It can be written as a sum of positive squares in only one way, i.e., 18402550336 + 1808460676 = 135656^2 + 42526^2 .

It is a super-2 number, since 2×20211011012² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20211010984 and 20211011002.

It is not an unprimeable number, because it can be changed into a prime (20211011011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2526376373 + ... + 2526376380.

It is an arithmetic number, because the mean of its divisors is an integer number (5894878213).

Almost surely, 2^20211011012 is an apocalyptic number.

It is an amenable number.

20211011012 is a deficient number, since it is larger than the sum of its proper divisors (15158258266).

20211011012 is a wasteful number, since it uses less digits than its factorization.

20211011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5052752757 (or 5052752755 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20211011012 its reverse (21011011202), we get a palindrome (41222022214).

The spelling of 20211011012 in words is "twenty billion, two hundred eleven million, eleven thousand, twelve".